Patent US3796187A successfully refreshed from Google Patents.
US3796187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for developing continuous electrophotographic photosensitive web material
Assignee: Fujifilm Holdings Corp
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Filing: 1971-07-02
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Granted: 1974-03-12
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Expires: 1991-07-02
Abstract
Abstract An apparatus for developing continuous electrophotographic photosensitive web material which comprises plural support drums in an array in a container for liquid developer, plural developing electrodes which are larger in dimension than the latent image area formed on the photosensitive material and which are arranged along the periphery of the support rollers so as to be in facing relationship with slight spacing therebetween with the continuous electrophotographic photosensitive web material to be wound the support drums at least over the length of the latent image area with the rear side thereof towards the drums, a means for supplying liquid developer into the space between the developing electrodes and the photosensitive material, and advancing the photosensitive material intermittently so as to bring all the latent image areas in the developing section into facing relationship with developing electrodes respectively when the photosensitive material is brought to standstill.
Inventors
- 👤 M Sato
- 👤 O Fukushima
- 👤 S Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:38
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/108
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
168 words
An apparatus for developing continuous electrophotographic photosensitive web material which comprises plural support drums in an array in a container for liquid developer, plural, stationary developing electrodes disposed in said liquid developer which are larger in dimension than the latent image area formed on said photosensitive material and which are arranged along and outside the periphery of said support rollers so as to be in facing relationship with slight spacing therebetween with said continuous electrophotographic photosensitive web material to be wound on said support drums at least over the length of said latent image area with the rear side thereof towards the drums, a means for supplying liquid developer into the space between said developing electrodes and said photosensitive material, and means for advancing said photosensitive material intermittently so as to bring all the latent image areas in the developing section into facing relationship with developing electrodes respectively when said photosensitive material is brought to standstill so the latent image areas may be subjected to simultaneous developing action.
Claim 2
Independent Claim
168 words
An apparatus for developing continuous electrophotographic photosensitive web material which comprises plural support drums in an array in a container for liquid developer, plural, stationary developing electrodes disposed in said liquid developer which are larger in dimension than the latent image area formed on said photosensitive material and which are arranged along and outside the periphery of said support rollers so as to be in facing relationship with slight spacing therebetween with said continuous electrophotographic photosensitive web material to be wound on said support drums at least over the length of said latent image area with the rear side thereof towards the drums, a means for supplying liquid developer into the space between said developing electrodes and said photosensitive material, and means for advancing said photosensitive material intermittently so as to bring all the latent image areas in the developing section into facing relationship with developing electrodes respectively when said photosensitive material is brought to standstill so the latent image areas may be subjected to simultaneous developing action.
Claim 3
Dependent Claim
29 words
An apparatus claimed in claim 1, wherein comprising rollers provided between said supporting drums for pressing the photosensitive material onto said support drums extending almost over the periphery thereof.
Claim 4
Dependent Claim
16 words
An apparatus claimed in claim 2 wherein said rollers have a central portion with smaller diameter.
Claim 5
Independent Claim
165 words
An apparatus for developing continuous electrophotographic photosensitive web material which comprises plural support drums in an array in a container for liquid developer, plural developing electrodes which are larger in dimension than the latent image area formed on said photosensitive material and which are arranged along the periphery of said support rollers so as to be in facing relationship with slight spacing therebetween with said continuous electrophotographic photosensitive web material to be wound on said support drums at least over the length of said latent image area with the rear side thereof towards the drums wherein said spacing is relatively large at the former support drum and relatively small at the latter support drum, a means for supplying liquid developer into the space between said developing electrodes and said photosensitive material, and advancing said photosensitive material intermittently so as to bring all the latent image areas in the developing section into facing relationship with developing electrodes respectively when said photosensitive material is brought to standstill.
Claim 6
Independent Claim
165 words
An apparatus for developing continuous electrophotographic photosensitive web material which comprises plural support drums in an array in a container for liquid developer, plural developing electrodes which are larger in dimension than the latent image area formed on said photosensitive material and which are arranged along the periphery of said support rollers so as to be in facing relationship with slight spacing therebetween with said continuous electrophotographic photosensitive web material to be wound on said support drums at least over the length of said latent image area with the rear side thereof towards the drums wherein said spacing is relatively large at the former support drum and relatively small at the latter support drum, a means for supplying liquid developer into the space between said developing electrodes and said photosensitive material, and advancing said photosensitive material intermittently so as to bring all the latent image areas in the developing section into facing relationship with developing electrodes respectively when said photosensitive material is brought to standstill.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |